the splashes of blood you used were a good touch, but I think you need to add more effects to the red color. Its way too plain if we are comparing it to the rest of the theme. Try add some filters and fuse it with duplicated layers of blended ones with different color schemes to make it look more realistic.
Try use a more gangster looking fonts instead of basic font.
You need to blend the edges of the main psd. Its so choppy and needs to have a cleaner cut done to it.
Good effort btw.